/*
* Copyright (c) 2007, Nubo Technologies
* 
* All rights reserved.
* 
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
*
*    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
*    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
*    * Neither the name of the Nubo Technologies nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

package com.nubotech.gwt.oss.browser.client.ui;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DeferredCommand;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.DockPanel;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.PasswordTextBox;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
import com.nubotech.gwt.oss.client.OnlineStorageServiceFactory;
import com.nubotech.gwt.oss.client.auth.AuthenticationListener;
import com.nubotech.gwt.oss.client.auth.AuthenticationManager;
import com.nubotech.gwt.oss.client.auth.Credential;

/**
 *
 * @author jonnakkerud
 */
public class LoginView extends Composite implements AuthenticationListener {
    private DockPanel main;
    private TextBox email;
    private PasswordTextBox pass;
    
    public LoginView() {
        initWidget(main = new DockPanel());
        //initGui();        
    }
    
    @Override
    protected void onLoad() {
        initGui();
    }
        
    private void initGui() {
        main.setSpacing(10);
        
        Label header = new Label("Login");
        header.addStyleName("caption");
        main.add(header, DockPanel.NORTH);
        main.setCellHorizontalAlignment(header, DockPanel.ALIGN_CENTER);
        
        Grid grid = new Grid(2,2);
        grid.setCellSpacing(5);
        main.add(grid, DockPanel.CENTER);
        
        grid.setText(0,0, "email:");
        email = new TextBox();
        grid.setWidget(0, 1, email);
        grid.setText(1,0,"password:");
        pass = new PasswordTextBox();
        grid.setWidget(1,1, pass);       
        
        // TODO have a stay logged in ... use cookies ???
        
        HorizontalPanel buttonsPanel = new HorizontalPanel();
        main.add(buttonsPanel, DockPanel.SOUTH);
        
        Button loginB = new Button("login");
        buttonsPanel.add(loginB);
        loginB.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                performLogin();
            }
        });
    }
    
    private void performLogin() {
        AuthenticationManager mgr = AuthenticationManager.instance();
        if (Credential.MOCK_EMAIL.equals(email.getText()) && Credential.MOCK_PASS.equals(pass.getText())) {
            Credential c = new Credential();
            c.setEmail(email.getText());
            c.setPass(pass.getText());
            mgr.update(c, AuthenticationManager.Storage.NONE);
            OnlineStorageServiceFactory.getService(c); // prime the service
        }        
        mgr.login(email.getText(), pass.getText(), this);
    }

    public void loginSuccess(Credential c) {
        History.newItem("");
    }

    public void loginFail(String message) {
        // show message
        Window.alert(message);
    }
    
}
